GD350A series high-performance multifunction VFD
-26-
Figure 4.13 Main circuit terminal diagram for 355G/400P–500G models
Sign
Terminal
Function description
037G/045P and
lower
045G/055P–110G/132P
132G/160P and
higher
R, S, T
Main circuit power input
3PH AC input terminal,
connected to the grid.
U, V, W
VFD output
3PH AC output terminal,
connected to the motor in
most cases.
P1
Not available
Not available
DC reactor
terminal 1
P1 and (+) connect to
external DC reactor
terminals.
(+) and (-) connect to
external braking unit
terminals.
PB and (+) connect to
external braking resistor
terminals.
(+)
Braking resistor
terminal 1
Braking unit terminal
1
Braking resistor terminal 1
DC reactor
terminal 2
Braking unit
terminal 1
(-)
/
Braking unit terminal 2
PB
Braking resistor
terminal 2
Braking resistor
terminal 2
Not available
PE
Grounding resistor less than 10
Ω
Grounding terminal for
safe protection; each
machine must carry two
PE terminals and proper
grounding is required.
Note:
Do not use asymmetrical motor cables. If there is a symmetrical grounding conductor in the motor
cable besides the conductive shielded layer, ground the grounding conductor on the VFD end and
motor end.
Braking resistor, braking unit and DC reactor are optional parts.
Route the motor cables, input power cables and control cables separately.
"Not available" means this terminal is not for external connection.
The PB is available for the 045G/055P–110G/132P models only when built-in braking units have
been selected for the 045G/055P–055G/75P models.
